2.All the students are required to attend the two-day ________ program so that they can have a complete understanding of the university they are admitted to.
(A) orientation (B) accomplishment (C) enthusiasm (D) independence

4.One important purpose of the course is for the students to learn to make sound judgments so that they can ________ between fact and opinion without difficulty.
(A) inform (B) undertake (C) manipulate (D) differentiate

5.In Taiwan, using electronic devices is prohibited on domestic flights because it _____ with the communication between the pilots and the control tower.
(A) occupies (B) activates (C) interferes (D) eliminates